Re: [usb] NEW ! USB 1.1 Function IP Core

[Rudolf Usselmann <rudi@asics.ws>]

You can read up on UTMI on the official USB web page (www.usb.org).

You can check the mailing list archives on OpenCores to get
a background on current discussions ...

rudi


On Friday 18 October 2002 10:21, andrewxue wrote:
> Dear ,
>
> As a newcomer of this maillist.This e-mail is my first mail. So could you
> give me some good beginning ?
>
> I am not familiar with the UTMI spec,is it a new-developed standard ?
> Could anyone tell me where can I find it or just send it to me
> directly,thanks in advance ,
>
> I check the previous mail,do you involve in some usb host controller
> design project ? Is it only for digital IP development ?
>
> Best Regards,
> Andrew
>
> ----- Original Message -----
> From: <meizx@ict.ac.cn>
> To: <usb@opencores.org>
> Sent: Thursday, October 17, 2002 8:26 PM
> Subject: Re: [usb] NEW ! USB 1.1 Function IP Core
>
> > Mr.Rudolf Usselmann,
> >   According to UTMI Specification Reversion1.05,UTM implemented such
> > functions as NRZI encoding and decoding,HS&FS DLL,receive and
> > transmit state machine,etc..It seems that your source code has the
> > same function as UTM except the analog part.Thank you for the
> > contributions.
> >   With regard to the host controller,if the USB1.1 is to be
> > implemented,I think most of the work you have done is valuable.As a
> > result,the remaining difficulty lies in USB STATE Control,List
> > Processor,and Root Hub Cofiguration.I am interested in host
> > controller,however,some difficult points should be clarified before
> > starting the project. I wish someone could tell the difference between
> > the root hub and general hub.
> >
> > Regards
> > MeiZX
> > meizx@ict.ac.cn
> >
> > ----- Original Message -----
> > From: Rudolf Usselmann <rudi@a... >
> > To: usb@o...
> > Date: Thu, 10 Oct 2002 13:09:39 +0700
> > Subject: Re: [usb] NEW ! USB 1.1 Function IP Core
> >
> > > On Thursday 10 October 2002 12:52, meizx@i...  wrote:
> > > > There is no UTM notion in USB Spec. Version1.1.Why the new 1.1
> > >
> > > It's "UTMI" and not "UTM" !  The UTMI specification is beyond the
> > > USB specification. It has been developed AFTER USB 1.1.
> > >
> > > Nevertheless it can be applied to USB 1.1 as well. The reason I
> > > have
> > > chosen it, is because I wanted to provide a standardized PHY and
> > > USB 1.1
> > > cores independent of each other. For example, there is no reason
> > > why
> > > the USB 1.1 PHY could not be adopted to work at high-speed (USB
> > > 2.0).
> > >
> > > > function core provide this interface.I read the white paper
> > >
> > > from usb.org
> > >
> > > > website "Designing a robust usb serial interface
> > >
> > > engine(SIE)".Where to
> > >
> > > > find the codes implementing the DPLL in this function?
> > >
> > > The DPLL is in the  Phy NOT SIE !
> > >
> > > > Regards
> > > > MeiZX
> > >
> > > rudi
> > > ------------------------------------------------
> > > www.asics.ws   - Solutions for your ASIC needs -
> > > FREE IP Cores: http://www.asics.ws/free_ip.shtml
> >
> > --
> > To unsubscribe from usb mailing list please visit
> > http://www.opencores.org/mailinglists.shtml

-- 
rudi
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